• J Pain · Feb 2024

    Prognosis of patients with neuropathic low back-related leg pain: An exploratory study using prospective data from UK primary care.

    • Sarah A Harrisson, Reuben Ogollah, Kate M Dunn, Nadine E Foster, and Kika Konstantinou.
    • Primary Care Centre Versus Arthritis, School of Medicine, Keele University, UK; North Staffordshire and Stoke-on-Trent Integrated Musculoskeletal Service (NIMS), Midlands Partnership University NHS Foundation Trust, Staffordshire, UK.
    • J Pain. 2024 Feb 1; 25 (2): 533544533-544.

    AbstractThis prospective cohort study investigates the prognosis of patients with neuropathic low back-related leg pain consulting in UK primary care. Data from 511 patients were collected using standardised baseline clinical examinations (including magnetic resonance imaging scan findings), self-report questionnaires at baseline, 4 months, 12 months, and 3 years. Cases of possible neuropathic pain (NP) and persistent-NP were identified using either of 2 definitions: 1) clinical diagnosis of sciatica, 2) self-report version of leeds assessment for neurological symptoms and signs (s-LANSS). Mixed-effects models compared pain intensity (highest of mean leg or mean back pain [0-10 Numerical Rating Scale]) over 3-years between persistent-NP versus non-persistent-NP based on 1) clinical diagnosis, 2) s-LANSS. Logistic regression examined associations between potential prognostic factors and persistent-NP at 4 months based on the 2 NP definitions. At 4-months, using both definitions: 1) approximately 4 out of 10 patients had persistent-NP, 2) mean pain intensity was higher for patients with persistent-NP at all follow-up points compared to those without, 3) only pain self-efficacy was significantly associated with persistent-NP (s-LANSS: OR .98, sciatica: .98), but it did not predict cases of persistent-NP in either multivariable model. Based on factors routinely collected from self-report and clinical examination, it was not possible to predict persistent-NP in this population. PERSPECTIVE: This study provides evidence that neuropathic back-related leg pain in patients consulting in primary care is not always persistent. Patients with persistent neuropathic pain had worse outcomes than those without. Neither leg pain intensity, pain self-efficacy nor MRI scan findings predicted cases of persistent neuropathic pain in this patient population.Crown Copyright © 2024. Published by Elsevier Inc. All rights reserved.

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